centos 69 修改默认语言
{
vim /etc/sysconfig/i18n 

LANG="en_US.UTF-8"
SYSFONT="latarcyrheb-sun16"

https://wiki.centos.org/zh/Manuals/ReleaseNotes/CentOS6.9#head-aa2a74450be9cf769bccd56f8ccf230fef986dc2
}